Device for continuous glucose monitoring

Abstract

This application relates to the field of medical devices and discloses a device for continuous blood glucose monitoring (CGM). The device includes a lower housing, a conductive seal, a PCB circuit board, and an upper housing. The conductive seal is a first flexible body that forms a sealed space in contact with the upper and lower housings. One or more second flexible bodies extend between the upper and lower surfaces of the first flexible body. A slit perpendicular to the ground is provided on the first flexible body, dividing the second flexible bodies and at least partially accommodating a sensor perpendicular to the ground. The dividing point forms a first connection point, contacting the sensor's electrodes. A second connection point is formed on the upper surface of the second flexible body, contacting the PCB circuit board. The conductive seal connects the vertical sensor and the parallel PCB circuit board. This application simplifies the connection between the sensor and the circuit board, improves the device's sealing and stability, and ensures the reliability and accuracy of the CGM system during long-term use.

Description

Technical Field

[0001] This application relates to the field of medical devices, specifically to a device for continuous blood glucose monitoring. Background Technology

[0002] In existing glucose monitoring devices, especially in continuous glucose monitoring (CGM) systems, the electrical connection between the sensor and the PCB circuit board has always been a bottleneck in technological development. Current technologies typically connect a vertically mounted sensor to a horizontally mounted PCB circuit board; however, due to the difference in their mounting orientation, this electrical connection method often presents the following problems:

[0003] 1. Unstable electrical connection. Because the sensor is perpendicular to the ground, while the PCB circuit board is usually placed horizontally, there is a significant spatial difference and instability in the electrical connection between the two. The electrodes of the sensor and the conductive lines on the circuit board cannot be precisely aligned, resulting in poor contact and affecting the stability and accuracy of signal transmission.

[0004] 2. Difficult installation. This vertical and horizontal connection method requires precise alignment and assembly processes. Due to the high difficulty in connecting the sensor and the PCB circuit board, deviations are prone to occur during manufacturing, leading to increased production costs. Furthermore, the assembly process is complex and error-prone.

[0005] 3. Complex electrical connections. Existing technologies typically require additional connecting wires or complex connection components to ensure electrical connections between the sensor and the PCB board, increasing design complexity and cost. Furthermore, traditional electrical connection methods are susceptible to interference from external environments (such as temperature and humidity), affecting system stability. Summary of the Invention

[0006] The purpose of this application is to provide a device for continuous blood glucose monitoring that simplifies the connection between the sensor and the circuit board, improves the device's sealing and stability, and ensures the reliability and accuracy of the CGM system during long-term use.

[0007] This application discloses a device for continuous blood glucose monitoring, comprising: an upper housing, a PCB circuit board, a conductive seal, a sensor, and a lower housing;

[0008] The lower housing, the conductive seal, the PCB circuit board, and the upper housing are assembled sequentially from bottom to top;

[0009] The conductive sealing element body is a first flexible body, which is configured to contact the upper housing and the lower housing, so that the upper housing and the lower housing form a sealed space after assembly;

[0010] One or more second flexible bodies are provided between the upper and lower surfaces of the first flexible body. The first flexible body has a slit perpendicular to the ground. The slit is used to at least partially accommodate the sensor perpendicular to the ground. The slit divides the second flexible body and forms a first connection point at the division. The first connection point contacts the electrode of the sensor. The second flexible body forms a second connection point on the upper surface of the first flexible body. The second connection point contacts the PCB circuit board.

[0011] The conductive seal is configured to connect the sensor perpendicular to the ground and the PCB circuit board parallel to the ground.

[0012] In a preferred embodiment, the conductive seal includes a first boss with a window extending through the conductive seal, the window being for a glucose detection probe vertically disposed on the lower housing to pass through.

[0013] In a preferred embodiment, the conductive seal is further provided with a second boss, on which the slit is provided, and the second boss is configured to fully accommodate the sensor.

[0014] In a preferred embodiment, the PCB circuit board has a fixing groove, which cooperates with the second boss to fix the PCB circuit board to the conductive seal.

[0015] In a preferred embodiment, the upper housing is provided with an opening for the glucose detection probe to extend out.

[0016] In a preferred embodiment, the bottom of the lower housing is provided with a flange, which is configured to enclose and fix the conductive seal.

[0017] In a preferred embodiment, when there is no second boss, there is no need to open the fixing groove on the PCB circuit board. In this case, the PCB circuit board is fixed to the conductive seal by the matching of the edge shape of the PCB circuit board with the outer edge shape of the first boss.

[0018] In a preferred embodiment, the width of the second boss is smaller than the width of the first flexible body, and the center of symmetry of the second boss and the center of symmetry of the first flexible body are on the same vertical plane.

[0019] In a preferred embodiment, the second flexible body is columnar and perpendicular to the ground.

[0020] In a preferred embodiment, the angle between the axis of the second flexible body and the horizontal plane is less than 90°.

[0021] In this embodiment, the conductive seal uses two different flexible bodies. The first flexible body, which serves as the main body, mainly functions to form a sealed state inside after the upper and lower shells are closed. The second flexible body has conductive properties. When a sensor perpendicular to the ground is inserted into the slit of the first flexible body, the electrodes on the sensor can contact the first connection points of the conductive second flexible body on both sides of the sensor through the slit. Then, the second connection points of the second flexible body contact the PCB circuit board. Thus, a stable electrical connection between the vertical sensor and the horizontal PCB circuit board is achieved through a simple structure.

[0022] Furthermore, the first boss and window structure allow the glucose detection probe to pass smoothly through the conductive seal. In addition, the slit of the second boss can completely accommodate the sensor, ensuring accurate connection between the sensor electrode and the conductive seal. The fixing groove on the PCB allows the PCB circuit board to be firmly connected to the conductive seal. The above structure comprehensively improves the stability of the electrical connection and the mechanical stability of the device.

[0023] Furthermore, the openings and flanges in the upper and lower housings enhance the device's sealing and structural stability. The opening in the upper housing facilitates the extension of the glucose probe for continuous blood glucose monitoring, while the flange in the lower housing encloses and secures the conductive seal, preventing the risk of components loosening or falling off.

[0024] The specification of this application contains numerous technical features distributed across various technical solutions. Listing all possible combinations of these technical features (i.e., technical solutions) would make the specification excessively lengthy. To avoid this problem, the various technical features disclosed in the above-described invention, the various technical features disclosed in the following embodiments and examples, and the various technical features disclosed in the accompanying drawings can be freely combined to form various new technical solutions (all of which are considered to have been described in this specification), unless such a combination of technical features is technically infeasible. For example, one example discloses feature A+B+C, and another example discloses feature A+B+D+E. Features C and D are equivalent technical means that serve the same function, and technically only one needs to be used; they cannot be used simultaneously. Feature E can technically be combined with feature C. Therefore, the solution A+B+C+D should not be considered as described because it is technically infeasible, while the solution A+B+C+E should be considered as described. Attached Figure Description

[0025] Figure 1 This is an exploded structural diagram of a device for continuous blood glucose monitoring according to one embodiment of this application;

[0026] Figure 2This is a three-dimensional structural schematic diagram of a conductive seal of a device for continuous blood glucose monitoring according to one embodiment of this application;

[0027] Figure 3 This is an exploded structural diagram of a device for continuous blood glucose monitoring according to one embodiment of this application;

[0028] Figure 4 This is a three-dimensional structural schematic diagram of a conductive seal of a device for continuous blood glucose monitoring according to one embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Upper housing, 2-PCB circuit board, 3-Conductive seal, 301-First flexible body, 302-Second flexible body, 303-Slit, 304-First connection point, 305-Second connection point, 306-First boss, 307-Window, 308-Second boss, 4-Sensor, 5-Lower housing. Detailed Implementation

[0031] In the following description, many technical details are presented to help the reader better understand this application. However, those skilled in the art will understand that the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0033] This application relates to a device for continuous blood glucose monitoring, the structural diagram of which is shown below. Figure 1-4 As shown, it includes: an upper housing 1, a PCB circuit board 2, a conductive seal 3, a sensor 4, and a lower housing 5;

[0034] The lower housing 5, conductive seal 3, PCB circuit board 2, and upper housing 1 are assembled sequentially from bottom to top. The conductive seal 3 is a first flexible body 301, which is configured to contact the upper housing 1 and the lower housing 5, forming a sealed space after assembly. One or more second flexible bodies 302 extend between the upper and lower surfaces of the first flexible body 301. The first flexible body 301 has a slit 303 perpendicular to the ground, which at least partially accommodates a sensor 4 perpendicular to the ground. The slit 303 divides the second flexible body 302, forming a first connection point 304 at the division point. The first connection point 304 contacts the electrode of the sensor 4. The second flexible body 302 forms a second connection point 305 on the upper surface of the first flexible body 301, which contacts the PCB circuit board 2. The conductive seal 3 is configured to connect the sensor 4 perpendicular to the ground and the PCB circuit board 2 parallel to the ground.

[0035] In an alternative embodiment, slit 303 completely accommodates sensor 4, which is perpendicular to the ground. The width of slit 303 matches the width of sensor 4, allowing sensor 4 to be fully inserted and stabilized within slit 303. The depth of slit 303 is just enough to accommodate the entire sensor 4, or the depth of slit 303 is greater than the vertical length of sensor 4.

[0036] In an optional embodiment, the conductive seal 3 includes a first boss 306 with a window 307 penetrating the conductive seal 3. The window 307 allows a glucose detection probe, vertically mounted on the lower housing 5, to pass through. Optionally, the window 307 extends through both the upper and lower surfaces of the first boss 306. Optionally, the window 307 can be circular, elliptical, or rectangular. Optionally, the first boss 306 is positioned above and integrally formed with the first flexible body 301, and the first boss 306 and the first flexible body 301 are made of the same material. Optionally, the width of the first boss 306 is the same as that of the first flexible body 301. Optionally, the length of the first boss 306 is less than the length of the first flexible body 301.

[0037] In an optional embodiment, the conductive seal 3 is further provided with a second boss 308, which has a slit 303. The second boss 308 is configured to completely accommodate the sensor 4. Optionally, the width of the second boss 308 is smaller than the width of the first flexible body 301. Optionally, the first end sidewall of the second boss 308 is on the same vertical plane as the sidewall of the first flexible body 301, and the second end of the second boss 308 is integrally joined with the first boss 306.

[0038] In an optional embodiment, the height of the first boss 306 is greater than the height of the second boss 308.

[0039] In an optional embodiment, a fixing groove is provided on the PCB circuit board 2, which cooperates with the second boss 308 to fix the PCB circuit board 2 on the conductive seal 3.

[0040] In an optional embodiment, when there is no second boss 308, there is no need to open a fixing groove on the PCB circuit board 2. In this case, the PCB circuit board 2 is fixed on the conductive seal 3 by matching the edge shape of the PCB circuit board 2 with the outer edge shape of the first boss 306.

[0041] In an optional embodiment, the upper housing 1 is provided with an opening for the glucose detection probe to extend out.

[0042] In an optional embodiment, the bottom of the lower housing 5 is provided with a flange, which is configured to enclose and fix the conductive seal 3.

[0043] In an optional embodiment, the lower housing 5 and the upper housing 1 have a circular, elliptical, or square geometry.

[0044] In an optional embodiment, the second flexible body 302 is columnar in shape.

[0045] In one optional embodiment, the number of second flexible bodies 302 is 2-10, preferably 3.

[0046] In an optional embodiment, the axis of the second flexible body 302 makes an angle of less than 90° with the horizontal plane.

[0047] To better understand the technical solution of this application, two specific examples are provided below. The details listed in these examples are mainly for ease of understanding and are not intended to limit the scope of protection of this application.

[0048] Example 1

[0049] In this embodiment, the conductive seal 3 includes a first flexible body 301 and a second flexible body 302. A second protrusion 308 is provided on the first flexible body 301. The center of symmetry of the second protrusion 308 and the center of symmetry of the first flexible body 301 are on the same vertical plane. At this time, the second flexible body 302 located inside the first flexible body 301 maintains a certain tilt angle with the ground. A slit 303 divides the second protrusion 308, the first flexible body 301 and the second flexible body 302 from top to bottom. The place where the second flexible body 302 is divided by the slit 303 forms a first connection point 304. The upper surface of the second flexible body 302 is located on the upper surface of the first flexible body 301 to the left and / or right of the second protrusion 308, forming a second connection point 305.

[0050] Specifically, the second boss 308 is configured to completely accommodate the sensor 4 perpendicular to the ground through the slit 303, and its width is smaller than the width of the first flexible body 301. The first end sidewall of the second boss 308 is on the same vertical plane as the sidewall of the first flexible body 301, while the second end of the second boss 308 is integrally joined with the first boss 306. The height of the first boss 306 is greater than the height of the second boss 308.

[0051] In this embodiment, a fixing groove is formed on the PCB circuit board 2, which cooperates with the second boss 308 to securely fix the PCB circuit board 2 to the conductive seal 3. When the first connection point 304 of the second flexible body 302 contacts the electrode of the sensor 4 through the slit 303, the second connection point 305 of the second flexible body 302 contacts the PCB circuit board 2, forming an electrical conductive path. This design ensures the stability of the device during long-term use and provides better electrical connection performance.

[0052] The following is a brief description of the entire continuous glucose monitoring device. From bottom to top, the device comprises a lower housing 5, a conductive sealing element 3, a PCB circuit board 2, and an upper housing 1. These components work together to ensure stable installation, electrical connection, and sealing protection of the sensor 4. The lower housing 5 is located at the bottom of the device. An upwardly protruding flange is provided on the inner surface of the bottom of the lower housing 5. This flange can be a continuous irregular ring structure or a discontinuous multi-segment structure. This flange surrounds and limits the conductive sealing element 3 installed within it, thus securely fixing the conductive sealing element 3 to the lower housing 5.

[0053] The conductive seal 3 includes a first flexible body 301 and one or more second flexible bodies 302 extending through its upper and lower surfaces. A slit 303 perpendicular to the ground is provided on the first and second flexible bodies. The sensor 4 is vertically inserted into and installed in the slit 303, with its electrodes contacting the first connection point 304 of the second flexible body 302. Subsequently, the PCB circuit board 2 is horizontally inserted into the conductive seal 3 through a fixing slot, making contact with the second connection point 305 of the second flexible body 302, thus completing the electrical connection with the sensor 4.

[0054] After assembly, the upper housing 1 closes from above and forms an integral structure with the lower housing 5. The conductive sealing element 3 is provided with a first protrusion 306, which is an elastic structure made of the same material as the first flexible body 301. When the upper housing 1 and lower housing 5 are closed, the first protrusion 306 can press upwards against the corresponding part of the upper housing 1 to achieve an elastic sealing fit and enhance the overall airtightness. Furthermore, both the first protrusion 306 and the upper housing 1 have openings at corresponding positions, allowing a glucose detection probe installed inside the first protrusion 306 to extend outwards through the structure, thereby completing the continuous blood glucose monitoring function in the body or subcutaneous tissue.

[0055] Example 2

[0056] The difference between this embodiment and Embodiment 1 is that this embodiment does not have a second protrusion 308. The second flexible body 302 is disposed perpendicular to the ground within the first flexible body 301. A slit 303 divides the second flexible body 302 into two parts, forming a first connection point 304 at the division point. The first connection point 304 contacts the electrode of the sensor 4. The upper surface of the second flexible body 302 is exposed on the upper surface of the first flexible body 301, forming a second connection point 305. The upper surface of the second flexible body 302 and the upper surface of the first flexible body 301 are on the same horizontal plane. The second connection point 305 contacts the PCB circuit board 2, thereby enabling the sensor 4 perpendicular to the ground and the PCB circuit board 2 horizontally to the ground to conduct electricity.

[0057] Since there is no second boss 308 in this embodiment, the recessed shape of the edge of the PCB circuit board 2 can perfectly match the shape of the outer edge of the first boss 306. Therefore, the PCB circuit board 2 directly engages with the first boss 306 to be fixed in the horizontal direction.

[0058] It should be noted that in this patent application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this patent application, if it refers to performing an action according to an element, it means performing the action at least according to that element, including two cases: performing the action only according to that element, and performing the action according to that element and other elements. Expressions such as "multiple," "repeatedly," and "various" include two, two times, two kinds, and more than two, more than two times, and more than two kinds.

[0059] This specification includes combinations of various embodiments described herein. Individual references to embodiments are made (e.g., "one embodiment," "some embodiments," or "preferred embodiments"); however, these embodiments are not mutually exclusive unless indicated to be mutually exclusive or are readily apparent to those skilled in the art. It should be noted that the word "or" is used in a non-exclusive sense throughout this specification unless the context explicitly indicates or requires it.

[0060] All documents mentioned in this application are considered to be incorporated in their entirety into the disclosure of this application so that they can serve as a basis for modifications if necessary. Furthermore, it should be understood that after reading the foregoing disclosure of this application, those skilled in the art can make various alterations or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. A device for continuous blood glucose monitoring, characterized in that, include: Upper housing, PCB circuit board, conductive seals, sensor, and lower housing; The lower housing, the conductive seal, the PCB circuit board, and the upper housing are assembled sequentially from bottom to top; The conductive sealing element body is a first flexible body, which is configured to contact the upper housing and the lower housing, so that the upper housing and the lower housing form a sealed space after assembly; One or more second flexible bodies are provided between the upper and lower surfaces of the first flexible body. The first flexible body has a slit perpendicular to the ground. The slit is used to at least partially accommodate the sensor perpendicular to the ground. The slit divides the second flexible body and forms a first connection point at the division. The first connection point contacts the electrode of the sensor. The second flexible body forms a second connection point on the upper surface of the first flexible body. The second connection point contacts the PCB circuit board. The conductive seal is configured to connect the sensor perpendicular to the ground and the PCB circuit board parallel to the ground.

2. The device for continuous blood glucose monitoring as described in claim 1, characterized in that, The conductive seal includes a first boss with a window that passes through it, allowing a glucose detection probe vertically mounted on the lower housing to pass through.

3. The device for continuous blood glucose monitoring as described in claim 2, characterized in that, The conductive seal is further provided with a second boss, on which the slit is provided, and the second boss is configured to completely accommodate the sensor.

4. The device for continuous blood glucose monitoring as described in claim 3, characterized in that, The PCB circuit board has a fixing groove, which cooperates with the second boss to fix the PCB circuit board on the conductive seal.

5. The device for continuous blood glucose monitoring as described in claim 2, characterized in that, The upper housing has an opening for the glucose detection probe to extend out.

6. The device for continuous blood glucose monitoring as described in claim 1, characterized in that, The bottom of the lower housing is provided with a flange, which is configured to surround and fix the conductive seal.

7. The device for continuous blood glucose monitoring as described in claim 4, characterized in that, When there is no second boss, there is no need to open the fixing groove on the PCB circuit board. In this case, the PCB circuit board is fixed on the conductive seal by matching the edge shape of the PCB circuit board with the outer edge shape of the first boss.

8. The device for continuous blood glucose monitoring as described in claim 4, characterized in that, The width of the second protrusion is smaller than the width of the first flexible body, and the center of symmetry of the second protrusion and the center of symmetry of the first flexible body are on the same vertical plane.

9. The device for continuous blood glucose monitoring as described in claim 1, characterized in that, The second flexible body is columnar and perpendicular to the ground.

10. The device for continuous blood glucose monitoring as described in claim 1, characterized in that, The angle between the axis of the second flexible body and the horizontal plane is less than 90°.

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